question archive A test is done to see if the claim that adults in a certain city have an average Body Mass Index (BMI) of 27 kilograms per meter-squared
A test is done to see if the claim that adults in a certain city have an average Body Mass Index (BMI) of 27 kilograms per meter-squared
Subject:StatisticsPrice: Bought3
A test is done to see if the claim that adults in a certain city have an average Body Mass Index (BMI) of 27 kilograms per meter-squared. The results of the data collection are above and represent a random sample of 40 adults. Use a 0.05 significance level.
a. State the claim in words.
b. Express the claim mathematically.
c. What is the Null Hypothesis?
d. What is the Alternative Hypothesis?
e. What is the sample mean: sample mean =
f. What is the sample standard deviation s =
g. Which test procedure is appropriate to perform the required hypothesis test? (z-test or t-test)
h. What is the test statistic?
i. What is the P-Value (If z or t > 0 in a right tail test, P-Value is area under curve to right of z or t. (Note: If z or t < 0 in a left-tail test, P-Value is the area under curve to left of z or t. If it is a two tail test the P-Value is twice the area under the curve beyond z or t.)
P-Value =
j. Should the Reject Null Hypothesis or Fail to Reject Null Hypothesis?
k. State your conclusion in words.
